Next generation, high-efficiency superconductor laser diode. 520nm green laser. Constant and pulse modes. Ambidextrous push-button activation. Recessed on/off button. Auto shut-off after 5 minutes. Mounts to Picatinny or Weaver-style rails. Operating Temperature: 14F to 122F. Requires (6) LR626 1.5V button cell batteries (two sets included). Boxed with hanging tab.